Door-lock mechanism.



Patented June 1, 1915.

z .W H 1 O m P1 A: 1 m m I T E M s 5 W Mm 0 L. TURK.

DOOR LOCK MECHANISM.

APPLICATION FILED mac. 2a, 1914.

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L. TURK.

DOOR LOCK MECHANISM.

APPLICATION FILED 05c. 26. 1914.

Patented June 1, 1915.

5 SHEETSSHEET 4.

llfllliif'ii Fi m.

L. TURK.

DOOR LOCK MECHANISM.

APPLICATION FILED DEC.26. 1914.

Patented June 1, 1915.

5 SHEETS-SHEET 5.

LEO TURK, OF EAST YOUNGSTOWN, OHIO.

DOOR-LOCK MECHANISM.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed December 26, 1914. Serial No. 879,101.

-'T 0 all whom it may concern:

Be it known that 1, Leo Tusk, subject of the King of Hungary, residing at East Youngstown, in the county of Mahonmg and State of Ohio, have invented certain new and useful Improvements in Door-Lock Mechanism, of which the. following is a specification.

This invention relates to certain new and useful improvements in door lock mechanism.

It will first be noted that the present lock is primarily designed for employment upon either an outer or an inner door and has separate means arranged uponthe inner side of the door for actuating the lock mechanism which is distinct and independent from the actuating means arranged upon the outside of the door.

One of the objects of the invention 1S'.t0 provide the inner side of the door with merely a latch and knob for the complete control of the lock bolt, there being no keyhole opening at the inner side of the door and the lock being therefore controlled from the inner side without the employment of a ke t lhe main. object however of the invention is to provide a lock mechanism in which the bolt is automatically projected in its locked position upon-closing thedoor and is released for withdrawal by the outer-knob by means of two independent pushbuttons ar-- ranged at the outside of the door, it belng necessary to successively press each of the said buttons a predetermined differentjnumber of times for the purpose of positionlng the-lock mechanism so as to allow such .re-

traction of the bolt. Coupled with this object of the device is a means shiftable from the edge of the door whereby the combination of the push buttons may be changed as I desired or in other words the number of iIn- 'pulsesrequired to be exerted upon such push button maybe predetermined all of which inures to make the look a serviceable safety dev ce and difficult to manipulate by any unauthorized person. This object also includes a key. manipulated means operable only from the outside of the door for rendering the push button releasing means either active or inactive at will, while combin ng with such, a key-hole, spindle of substantially the some external appearance as the push buttons and adapted for being manually depressed for automatically allowlng the shifting of the bolt engaging lock mechanism from the unlocked to the locked positlon.

. While the outer and inner knobs are independently operable for shifting the bolt when released by the lock mechanism, the latch on-the inner side ofthe door is operable for'locking the bolt against withdrawal from either side ofthe door when in one position leaving the bolt entirely free to be moved by either knob when in another position and rendering the bolt retractable only by the inner knob when in a still further position.

It is also designed to provide means whereby thedesired one of the push buttons must be completely operated before the other push button begins its work so, that a person must be familiar with this feature of the mechanism for the perfect operation of the look, while it is also provided that both of the bolt locking members may be returned to their normal locked position by depressing the key-hole spindle in the event that an unsuccessful manipulation "of the buttons has been made in order to allow the operator to successfully renew his endeavors to correctly operate the buttons-in accord with the predetermined combination.

With these general objects in view and others that will appear as the nature of the invention is better understood. the same consists in the novel combination and arrangement of illustrated in the accompanying drawings and set forth in the appended claims.

In the drawings forming a part of this application and in which like-designating characters refer to corresponding parts throughout the several views. Figure 1 is a front elevation of a portion of the outer side of a door provided with the present invention. Fig. 2 is a similar view of the inner side of thedoor. Fig. 3 is a similar view of the edge of the door. Fig. 4 is a perspective view of the outside door plate detached. Fig. 5 is a similar view of the edge plate of the doordetached. Fig. 6 is a perspective view of the lock casing partially v and the two-part shank with the separate ward members arranged upon the shank.

.broken away and with the edge plate secured bers separated and detached. ,Fi'g."13 is a v in their operative positions.

sectional view upon a plane at right-angles Fig. 8 is a view similar to Fig. 7 partially broken away and with the ward members removed from the shank. Fig. 9 is a perspective view of the two ward members/detached from the knob shank, but. arranged in the same order as positioned thereon in Fig. 7. Fig. 10 is a perspective view of the automatic bolt engaging catch for the door edge portion of the lock. Fig. 11 is a per! spective view of the limitingstop for the bolt locking members detachech Fig. 12 is a perspective view of the key. actuated meniperspective view of the latch actuated bolt stop. Fig. 14 is a plan view'of thelock mechanism with the outer plate of the casin and the lock bolt with its spring remove therefrom. Fig. 15 is a similar'iyiew with one of the push button operated shifters partially actuated and showing the locking bolt with its spring in position as well as the .Fig. 19 is a perspective view of the toothed wheel employed with the combination changing stop. Fi 20 is a perspective view of the inner face 0 the end of the casing. engageable by the wheel shown in Fig. 19. Fig. 21 is a detail sectional view through the casing and the knob shank wards shown Fig. 22 is a along a line of section of Fi 21 and showing thesaid wards in elevation. Fig. 23 is a perspective view of the lock bolt detached. Fig. 24 is a perspective view taken from the opposite side of the lock blot from that shown in Fig. 23. Fig. 25 is a perspective view of the inner face of the, outer side plate ofthe lock casing detached. Figs. 26

and 27 are perspective views of the outer narrower and the inner broader cooperating bolt locking members respectively detachedand separated from each other. Figs. 28

and 29 are perspective views of the push buttonv actuated shifters for the said outer and inner bolt locking members respectively. Fig. 30 is a perspective view of the spring dog mechanism detached for the bolt locking members. Fig. 31 is a perspective view of the latch moved actuator detached. Fig. 32 is a erspective view of the mounting bracket or the actuator shown in Fig. 31, and Fig. 33 is a side elevation of one of ltJhn pivoted engaging hooks carried by the o t. T

upon a door, the same is illustrated in con- This invention being designed for use.

nection with a door 1 0 and has the lock 1 casing 11 countersunk within the edge 12.

of the door while the front side or wall 13v of the casing has the edge plate'l4 of the doorsecured thereto.

Thelock is provided on the insideof the door-with a turn knob 15 and also with: a

swinging latch 16 bothyoperable as hereinafter described while on the outer side of the doora similar knob 17 is provided which has entirely independent movement from the innet*knob, a key-hole spindle '18 and upper and'lower' push buttons 19 and 20 being :also fmd upon the outer side of the-door. i'lhe'x ustijialndoorplates 21 and '22 are arijspectively upon the inner and o er A I jgitudinaI shiftable bolt 23 is mount- -edwithin the casing 11 and has its forward end portion 24 which is rectangular in crosssection a'dapted to project through the alining openings'25 and 26 respectively,"in thefrontiwall. of the casing and the edge plate.

Aspring-catch 27 is secured at one end to a fpost23itdjacent the said casing Wall 13 and asla reduced angularly-projecting free end 29 that xis adapted to seat withina't-ransversecorner socket 30 of the adjacently" positioned bolt portion 24. A detent 31 substantially of triangular form is pivotally mounted through alining slots32 and 33 respectively, in the said front wall and edge 1 seen that when the bolt is retracted, the catch-r127 will automatically drop within the socket 30 while the bolt is readily released by an inward pressure exerted upon the detent 31. A coil spring 35 is mounted upon ,a postx36 within the casing and has one end thereofsecured to the post while the opposite end of the spring'engages the inner end of the bolt withinthe angular notchj37 thereof, it being-noted that a retracting "of the bolt places the spring under tension so 27, the said spring 35 automatically projects thebolt to-itslockedpo'sition.

lVithin the lock'casing, two. overlying boltplate by means of trunnions 34 upon the I said detent which are journaled in the said 7 front wall in opposite sides of the slot 32 thereof. By .this arrangement it will be that when the bolt is released by the catch locking members 38 and 39 (see Figs. 26 and 27) are provided transversely shiftable beneath'the bolt23, the locking member '39 lying undermost and provided with teeth 40 upon one edge thereof and with a perpendicularly projecting flange 41 adjacent its opposite edge, which flange has aninwardly projecting guard 42 and is also provided with a notch 43 adj acent-the said guard and one of the teeth40. The locking member 38 is positioned outwardly upon the inner locking member 39 being narrower than-the i said member 39 and being provided with in directalinement' with a pre-determined positioned beneath the aforementioned guard 42. A perpendicularly positioned flange 45 is longitudinally arranged uponv the, outer locking member 38 and is provided with a notch 46 of a width corresponding to the length of one of the teeth 44 whichnotches 46 and 43 are requiredto be positioned in direct alinement for releasing the bolt 23 I when the same is projected and by means of within the same while the line of movement.

1 thereof transversely beneath the bolt 23 is directed by means of perpendicularly arranged guards 4 8, 49 and 50 upon the said casing wall 47. The outerlockingmember 38 has a projecting finger 51 at one end thereof adjacent the toothed edge 14 and to which finger a coil spring 52 is attached for.

normally retaining the said locking member in its locked position as best illustrated inF-ig. 14, it being noted that the other end of the spring 52 is anchored as at 53. The

inner locking member 39 has a similar finger 54 at the corresponding end thereof adjacent the flange 41 and to which finger 54:, one end of a spring 55 is securedwhile the opposite end of said spring is anchored to the casing as at 56 such arrangement normally tending to maintain said inner lockingmem- Ear in its locked position with respect to the olt.

It will thus be seen that the members 38 and 39 are transversely shiftable beneath the bolt 23 and it will be noted that the said bolt is provided with two similar, double hooks 57 having pivoting trunnions 58 whereby the hooks are shiftably mounted within two similar slots 59 arranged in longitudinal alinement slightly spaced apart longitudinally of the said bolt, while similar springs 60 are provided for each of the said hooks for normally retaining the opposite claws 61 and 62 projecting outwardly of the oppositesides of the said slots. The claws 62 project from the inner side of the bolt,

-'or in other words, protrude through the slots 59 uponthat sideof the bolt whichis adjacent to the locking members 38 and 39, such protrusion of the hooks being suflicient to lie within thepaths of movement of the flanges 41 and 45 of the locking members and as will be evident, when such claws are so projecting, being positioned awayfrom the center of the lock casing from the said flanges 41 and '15, the bolt will be thereby restrained when projected from being retracted until either the said claws 62, are

withdrawn so as to allow the same to pass over the flanges 41 and 45 or unless the notches 43 and 46 of the locking members are brought into alinement with each other and also with such claws 62 and so that the claws will be relieved from their engagements with the said flanges and will freely ,pass through the said notches thereof in the bolt-projecting movement.

The inner knob 15 has a squared shank 63 u on which a ward 64 is secured, being at al times positioned within a recess 65 of one edge of the bolt 23 and being also positioned within a notch 66 of a shiftable 9 plate 67 that is slidably mounted upon the under face 68 of the bolt while the notch 66 is of less dimensions than the recess 65, which allows theplate 67 to be shifted longitudinally upon the bolt by means of the knob Ward 64 when the bolt is held stationary. The said plate 67 is provided with two slots 69 normally positioned in alinement with the bolt slots 59 through which plate slots the engaging claws 62 project. It will thus be seen that when the bolt is projected and the claws 62. retain the same in its locked position, a shifting of the plate 67 for depressing the claws 62 releases the bolt. When so released, the further turning of the inner knob engages its ward 64 with the adjacent edge of the recess 65 and thus retracts the bolt.

, The outer knob 17 has a squared shank 70 while the inner adjacent ends of the two knob shanks 63 and 70 are freely journaled together as at 71. The outer knob shank is provided with a ward 72 secured thereon which projects within the said recess 65 of the bolt so that Whenever the bolt is free to move longitudinally, the outer knob 17 may manually operate the same.

The latch 16 upon the inner side of the door is provided with a squared shank 73 projecting within the casing and having a collar 74 secured thereon which is provided with a projectinglug 75. The said inner latch is adapted to completely lock the bolt 'by means of a slidable bolt stop 76 of the form illustrated in Fig. 13 and which stop is slidably mounted within the casing by means of pins 77 carried by the casing which are received within a longitudinal slot 78 of the said stop. The inner end of the stop is latch lug 75 for moving the stop 76 to the position shown in Fig. 1 1. which will be out of the retracting path of travel of the bolt.

While the position of the stop flange as illustrated in Fig. 14 is such as to allow a retracting of the bolt, the latch may be ;,turned for engaging thelug 75 with the curved shoulder 82 of the stop and thus v illustrated in Fig. 14, at which time the lug 80 will engage the flange 79 upon any attempt to withdraw the bolt by either the outer or inner knob.

' A shiftable side plate 83 is arranged upon the outer side of the bolt similar to the inner slide plate 67 and has slots 81 therein adapted to normally aline with the bolt slots 59 so that the claws 61 project through the plate slots 84 when the opposite claws 62 are projected in their engaging positions. An

arm 85 is secured to the plate 83 and is bent around the bolt and projects between parallel fingers 86 carried by a latch moved actuator S7 of the form illustrated in Fig. 31, which actuator is pivoted as at. 88 to a stationary bracket 89 within the casing. The said actuator has a segment-shaped socket '90 within which the latch lug 75 is adapted to engage for turning the actuator and thereby shifting the arm 85' as well as the plate 83 when the bolt is held stationary, 9. lug stop 146 being provided for the lug 75. It will be evident that a shifting of such plate 83 over the projecting claws'61 will depress thesame within their respective slots, and which action will also retract the flangeengaging bolt retaining claws 62. The latch 16 therefore is adapted when properly manipulated to turn such actuator to render the claws 62 entirely inoperative, so that the bolt is free to be retracted by turning either the outer or the inner knob.

From the above description it will be seen that when the latch 16 is positioned at one extreme of its movement, the actuator 87 will be positioned as illustrated in Figs. 14 and 15 with the bolt freely shiftable by either knob while the other extreme movement of said latch'outwardly movesthe stop 76 to the dotted line position shown in Fig. 14, at

which time the. bolt is restrained against movement by either of the knobs while an ini so termediate positioning of the latch shifts the stop 76 inwardly and leaves the actuator 87 in such a position as to place the plate 83 so as to unobstruct the claws 61, whereby the outer knob will be capable of retracting the same through the agency of its ward 61 first moving the releasing plate 67 for retracting the engaging claws 62.

Separate shifters 91 and 92 (see Figs. 28'

and 29) are provided respectively, for the outer and inner locking members 38 and 39,

the said shifters being arranged shiftably mounted overlying each other and each having similar sharpened top fingers 93 which are adapted to forcibly engage the teeth 44 .and 40 of the locking members for inwardly shifting'such members. These shifters are slidably positioned within a housing 94 and each is provided with a similar retractile spring 95 for normally retainingthe shifters within the housing. Laterally projecting arms 96 and 97are carried by the outer and inner ends 98 and "99 respectively, of the upper and lower rockers 100 and 101 pivoted to the inner side of an outer side plate 102 of the lock casing. The upper and lower push buttons 19 and 20 are provided withinwardly projecting fingers 103 which'are corstantly seated upon the adjacent ends 104 and 105 respectively,of the said upper and lower rockers. Separate dogs 106 and 107 are respectively provided for the teeth 44 and 40 of the shiftable locking members while such dogs are pivoted to'one end of a lever 108 by means of a pivot pin 109 and by means of which pin also the lever is pivoted to the casing wall 47, it being noted that'each of the said dogs is provided with a similar spring 110 mounted upon the said lever and adapted to hold the dogs at one extreme of their movement and as limited by the free end 111 of thesaid lever. A blade-shaped plate 112 has a cornerv portion thereof se-' cured to the free end of thesaid-lever while the flattened face of the plate is engaged by similar leaf springs 113 carried byeach of the shifters 91 and 92 whereby the lever is,

normally positioned'to place the dogs in en- 7 V 1gaggment with their respective teeth of the ng members while such members are capable of inward movement toward their releasing positions by a ratcheting movement of the teeth beneath the said dogs and their resilient retractions as permitted by the aforementioned springs 110.

The key-hole spindle 18 projects within a tubular collar 114 and is provided with a sidelug 115 slidable within a side slot 116 of the said collar 111 while the said spindle is normally maintained projected by means of a coil spring.117 mounted inwardly thereof within the said collar, it being noted that the spindle has a terminal projecting barrel 118 projecting through an opening 119inthe casing wall 47 positioned centrally of the said collar. This arrangement positions the lug as illustrated in Fig. 1.8with re spect tothe plate 112 so that by depressing the spindle 18, the lug-115 engages the said plate and moves the same in afdirection.

' away from the said spindle, thus rocking the lever upon its pivot pin 109 and releasing the dogs from the teeth of the loclzing'members. The dog 106 of the outer locking memher is provided with an inwardly projecting' lug120 which'engages-the companion,

dog 107 so that whenever the dog 106 is actuated, the dog 107 must move therewith, but on the contrary, any movement of the dog 107 will not influence the dog 106 for movement.

A bracket 121 is positioned adiacent'the collar 116 and has a slide 122 mounted therein to which a hook 123 is pivoted for a spring 124 carried by the bracket 121 and engaging the said hook which automatically engages the hook with a pin 125 of the easing whenever the slide has reached such limit of its travel. A key member (not shown) is-adapted to move the slide by engaging a lateral projection 126 of the slide by which such projection is forcibly moved against the plate 112for completely releasing the dogs from their engagement with theteeth of the locking members, and this being the limit of the movement of the slide, the hook automatically engages the pin 125 for so retaining the slide until the key is turned in-an opposite direction which engages the heel 127 of the hook and releases the hook, after which the key engages the shoulder 128 of the slide and moves the latter to its inoperative position and other extreme movement.

The bolt is provided with a longitudinal slot 129 at the opposite end thereof from the locking end '24: and a post 130 of the aforementioned bracket 89 is positioned within the said slot 129 for giving direction to the path of movement of the bolt. A spring 131 is'carried by the bolt face 69 and engages the sliding plate 67 to normally retain the said plate out of contact with the claws 62. The outer plate 102 of the casingis adapted to be secured within notches 132 of theopposite side walls of the casing.

The bolt is provided with a triangular lug 133 upon one edge thereof which normally engages the plate 1.12 when the bolt is retracted and thereby holds the dogs out of engagement with the teeth of the locking members so that their respective return springs normally retain the locking members in their operative position for being automatically engaged by both bolt claws 62 whenever the bolt is projected by pressing the detent 31. It will thus benoted that .when the detent is so pressed, the'spring 35 automatically projects the bolt to its lockingposition and the bolt locking :members being normally positioned as shown in Fig. 14, the said claws will engage behind the flanges 41 and 45 of the locking members and will prevent a retracting of the bolt, the outward movement of the bolt being limited by the stop shoulder 145 upon the bolt.

When the bolt isprojected, it is retraetible without moving the locking members 38 and 39 to their releasing positions by shifting either of the side plates 83 or 67 by means of the latch or inner knob respectively, in the manner hereinbefore described.

In the manipulation of the lock'from the outer side of the door, the push buttons 19 and 20 are employed and it is necessary to manipulate each of said buttons a sufficient lated,

number of times to inwardly project the looking members respectively Influenced thereby, so as to position the flange notches 4.3 and 46 of such members in direct alinement witheach other and with the engaging claws 62 of the bolt. It will be noted that each impress upon either of the push buttons moves its-corresponding locking member inwardly ,a distance corresponding to one of its teeth and such teeth being of a length equal to the width of the flange notch of that member, it will vbe seen that the required distance for moving each of the locking. members may be readily ascertained and consequently the number of impulses which must-be given to each of the push buttons is accurately determinedfor the purpose of releasing the bolt from the locking members. It will be seen in the present in stance, that the notch 46 of the outerlocking member. is separated a distance of three teeth from the position of the flange notch 43 of the other locking member when both lockingmembers are normally positioned-so that inthe -evjent that it requires eight impulses upon the button19 to placethe notch 46 in alinement with-the bolt claws ,62, it will,.necessarily require. five impulses upon the button 20 to accurately position the notch 130f the inner lockin'gmember so as torender the bolt freely retractable through the notches of-the said members. It is thus necessary for a person to know the correct combination in order to manipulate the looking membersfor releasing the bolt and for further limiting the chance of unauthorized manipulation, the aforementioned lug 120 is provided upon the outer locking member dog 106 so that the outerlocking member38 must be first completely moved to its releasingpcsition by its push button 19 before the inner locking member begins its longitudinal movement under the influence of its push button.20. This is for the obvious reason that if the inner locking member was moved longitudinally prior to the movement of the outer member- 38, any subsequent impulse member would move the dog 106 of the outer member, which would thereby elease the dog 107 of the inner .member for allowing the inner member to automatically return to its normal locked position. As an unauthorized'person might infer that each of the two. push buttons is alternately manipu- In the event that one or more of the push given to the pushbutton 19 of such outer it will be seen that this requirement buttons is actuated but for some reason the bolt is not retractible, such for instance, as an error on the part .of the operator in givmg the proper number of impulses, the spindle is may then be depressed which will automatically release both of the dogs and thusreturn both of the locking members to their locked positions and allow the operator to start anew upon the manipulation of the proper combination.

It will be also noted that when the bolt locking members are. positioned for releasing the bolt, either of the knobs may be turned for retracting the bolt against the,

action of the spring 35 and so as to allow the bolt catch 27. to automatically retain the bolt in its released position, while the aforementioned lug 133 will engage and depress the plate 112 during such inward movement of the bolt and this automatically releases the dogs for allowing the boltlocking members 38 and 39 to automatically return to their operative positions while as before noted, the lug 133 will then remain in depressing contact with the said plate until the bolt is again projected. It will also be seen that whenever the door is closed, atwhich I time of course the boltis retracted, the outer edge of the detent' 31 Will engage the door casing for automatically releasing the bolt catch and thus allowing the bolt to be autoy matically projected to its locked position.

It is desirable to provide a means for 1 may. be readily controlled by means of a proper implement for moving the rack and changing the position of the limiting foot,

1 a guard-. fiange 147 being provided for the rack, The pinion is provided with a projecting lug 139 on its inner face which is adapted to engage the grooves 140 uponthe adjacent'face of the casing wall 13 so that the pinion and rack will remain in the desired adjusted positions to accurately-place the locking members in proper relation respecting their shifters 91 and 92. A spring 144 is carried by the inner end 143 of the screw 137 which insures a seating of the lug within one of the said engaging grooves. A radial mark 141 is positioned on the head end of the screw adjacent the kerf 138 and which mark is adapted to be brought into registry with dilferent ones of'the numerals 142 arranged upon the edge plate so that the condition'of the combination changing device may be readily ascertained by the authori zed operator of the lock.

changing the combination for the actuation of the push buttons and this is herein illustrated as consisting of a toothed rack 134' From this detailed description 1 of the device, it will be readily seen that the desired positioning of the lock mechanism is readily of a key and whereby the bolt is rendered inoperative by either knob, capable of being operated by the inner knob alone or readily actuated by either the outer or inner knob. As also specifically described, it will be seen that from the outer side of the door the push buttons may be readily actuated by a person familiar With the lock, whereby the bolt is released from the locking members so that the outer knob may be turned for retracting the bolt. a

While there are other objects which are completely fulfilled by the present structure, the main objects have been herein set forth as well as the preferred embodiment of the invention, but it will be understood that many changes may be made-without departing from the spirit and scope of the invention as claimed.

What I claim as new is 1. In combination with a door, a lock, a shiftable bolt for the lock, an inner knob, a

latch swingingly positioned adjacent the inner knob, pivoted engaging hooks upon the said bolt,,a slidable plate upon said bolt adapted for withdrawing the said hooks when-slidably moved upon the bolt, and a Ward upon said inner knob operativelyengageable with the said plate and bolt and operable upon turning the inner knob for retracting the bolt when the latch is in one position.

2. In combination with a door, a look, a shiftable bolt for the lock, an inner knob, a latch swingingly posltionedadjacent the inner knob, pivoted engaging hooks upon the said bolt, a slidable plate upon said bolt' adapted for withdrawing the said hooks when slidably moved upon the bolt, award. upon said inner'knob operatively engageable with the said plate andbolt and operable upon turning the inner knob. for retracting the bolt when the latch is in one position, a projecting lug upon said bolt, and a shiftable stop operable by said latch in the line of movement of said lug and adapted for,

preventing a retraction of the bolt when the latch is in another position.

3. A lock comprising a shiftable bolt, an inner and an outer knob, a swinging latch adjacent the inner knob, normally projecting engaging hooks carriedby thesaid bolt, 2.

depressing plate for the said hooks slidably carried by the said bolt, an actuator operatively connected to the said plate and having a side notch therein, alug rigidly connected to the saidlatch and positioned within the said notch of the actuator during a" 1 shifting movement of the said lug and thereby operably connected to the said .bolt for menace to one extreme limit of its movement.

a. A lock comprising a casing, a shiftable bolt within said casing-{an outer knob, opers ative connections between the said knob and bolt, normally projected spring pressed hooks carried by said bolt, underlying bolt locking members independently shiftable transversely of andlocated adjacent the said bolt, engaging flanges on the said bolt looking members having edge notches, hooks carried by the said bolt adapted for alinmg' with the said edge notches when-the said locking members are in their releasing po sitions, push button means adjacent the said outer knob, and shiftable means operable by said push buttons and engageable with said locking membersqfor shifting the latter to their said inoperative positions.

5. A look comprising a casing, a shiftable bolt within said casing, an outer knob, oper ative connections between the said knob and bolt, normally projected spring pressed hooks carried by said bolt, bolt locking members independently shiftable transversely of and located adjacent the said bolt, engaging hooks upon said bolt, flanges carried by the said locking members and having edge notches therein adapted for alining with the said hooks when the said locking members are in their releasing positions, push button means adjacent the said outer knob-,shiftable means operable by said push buttons and engageable with said locking" members for shifting the latter to their said inoperative positions, dog-engaging means and re turningrmeans for the said locking members, and dis-engaging means carried by the said bolt and engageably positioned within the plane of the said dog engaging means whereby the said locking members are auto matically released upon a retraction-of the said bolt.

6. A lockcomprising a casing, a shiftable bolt within said casing, a projection spring for the said bolt, shiftable engaging hooks upon the said bolt, bolt locking members transversely shiftable adjacent the said bolt, and projecting stop flanges upon the said locking members normally positioned in the path of movement of the said hooks and having notches therein arranged in alinement with the said books when the lockingmembers are in their releasing positions.

7 A'lock comprising a casing, a shiftable' bolt within said casing, a pro ection spring for the said bolt, shii'table engaging hooks upon the said bolt, bolt locking members transverselv shiftable adjacent the said bolt,

projecting stop flanges upon the said locking Emembers normal-1y positionedmil e path or movement of the said hooks and haying notches arranged in 'aliiienient 'with the said hoqkswhea-tte locki g the for each of the said locking members, and

independently successively operable engagpath of movement of the said hooks and having notches arranged 'in alinement with the said hooks when the locking members are in their releasing positions, separate return springs for each of the said locking members, independently successively operable engaging shifters for thesaid locking ers, spaced projecting arms upon the said shifters, pivoted rockersengaging the said arms, and push buttons for the said rockers projecting exteriorly of the said casing.

9. A lock comprising a casing, a shiftable bolt within said casing, aprojection spring for the said bolt, shiftable engaging hooks upon the said bolt, bolt locking members transversely shiftable adjacent the said bolt, projecting stop flanges upon the said locking members having notches normally p0- sitioned in. the path of movement of'the said hooks and arranged in. alinement with the said hooks when the locking members are in their releasing positions, separate return springs for each of the said locking mem-- bers, independently successively operable engaging shiftersfor the said locking members, return springs for the said shifters, spaced projecting-arms upon the said shifters, pivoted rockers engaging the said arms,

. push buttons for said rockers projecting exteriorly of the, said casing,- a bolt retracting knob operatively connected tothe said-bolt,

an adjustable stop within the, return path of movement of the said locking members, and

enga 'ng shifting means for the saidstop positionedat the door edge side of'the casmg. I I

10. A look comprising a casing, a shiftable bolt Within said. casing, a projectionspring for the said bolt, shiftable engaging hooks upon the said bolt, bolt locking members transversely shiftable adjacent the said members, independently. successively. opera able engaging 'shifter'szfon the said locking 1 members, return-springs for? the, Said" shift-1 members, return springs for the said shifters,: tspaced projecting farms"? uponathen said Y 4;}

shifters, pivoted rockers having their inner,x.;.

and push buttons engaging said rockers and projecting exteriorly of the said casing.

a 11. A lock comprising a casing, a shiftable bolt within said casing, a projection spring for the said bolt, shiftable engaging hooks upon the said bolt, bolt locking members transversely shiftable adjacent the said 'bolt, projecting stop flanges upon the said for the said shifters, spaced projecting arms upon the said shifters, pivoted rockershav ing their inner ends pivotallyengaging the said arms, and push buttons pro ecting exteriorly of the said casing. v

- 12. A look comprising a casing,-a shiftable bolt Within said'casing, a projection spring for the said bolt, shiftable engaging hooks upon the said bolt, bolt locking membersltransversely shiftable adjacent the'said bolt,.projecting stop flanges upon the said locking members normally positioned in the path of movement of the said hooks and having notches arranged in alinement with the said hooks when the locking members are in their releasing positions, a pivoted lever within said casing, an engaging dog for each locking member pivoted to the pivotal end of the said lever, a tapered plate carried by the free end of the said lever, a normally resiliently projected key-hole spindle carried by the said casing, and a projecting lug upon said spindle-having a path of. movement'in the same plane as the said plate when" the said dogs are in their engaged positions.

13. A lockcomprising a casing, a shiftable bolt within said casing, a projection spring for the said bolt, shiftable engaging hooks upon the said'bolt, bolt locking members transversely shiftable adj acent'the said bolt, projecting stop flanges upon the said locking members normally positioned inthe path of movement of the said hooks and arranged in alinement with the said hooks when the locking members are in their releasing positions. separate return springs for each ofthe said locking members, independently successively operable engaging shifters for the said locking members, a pivoted lever within said casing, an engaging dog for each locking member, pivoted to the piv-. otal end of the said lever, a tapered plate carried by the free end of the said lever, a

normally resiliently projecting key-hole 1 spindle carried by the said casing, and a projecting lug upon said spindle having a path of movement in the same plane as the said plate when the said dogs are in their engaged positions.

- 14. A lock comprising a casing, a shiftable bolt within said casing a projection spring for the said bolt,=shiftable engaging hooks upon the said bolt, bolt locking members transversely shiftableladjacentthe said bolt, projecting stop flanges upon the said locking members having inotches' normally positioned infthe path of movement of the said hooks and arranged in aline'ment with the said hooks when the lockingrmembers a are 1n their'releasing positions, separate re- 7 -turn springs for each of the said locking members, independently successively operable engaging shifters for the'said locking members, return springs forthe said shifters,- spaced projecting" arms upon thersaid shifters,lpivoted rockersengaging the said arms, push buttons engaging, said rockers and projecting exteriorly' of the said casing,-

a pivoted lever within jsaid 'casing. an en-, gaging dog for each locking member pivoted to the plvotal end'ofthe said lever,-a tapered plate carriedby the free "end of the said 15. A look comprising a casingpa shiftable bolt within said casing, a projection spring for the said bolt, shiftable engaging hooks upon the said bolt, bolt locking membcrs transversely shiftable adjacent the said bolt, projecting stop flanges upon the said locking members normally positioned in the path of'movement of the said hooks andhaving notches arranged in alinement with the saidhooks when the locking members are in a their releasing positions, separate return springs for each of the said locking members, i

independently successively operableengagr ing shifters for the said locking'members, return springs for the saidshiftersp spaced oted rockers engaging the said arms, push buttons engaging said rockers projecting exteriorly of the said casing, a bolt retracting knob operatively connected to the said bolt,

an adjustable stop within the return path of movement otthesaid locking members, engaging shifting' means for the said stop engaging oted to the pivotal end of thesaid lever, a

tapered plate carriedby the free end of the said lever, a normally resiliently'projected projecting arms;upon the said shifters, pivkey-hole spindle carried by the said casing, i and a projecting lug upon said spindle havw ing a path of movement in the same planeas the said plate whenthe said dogs are inthein engaged positions;

'16. A lock comprising a casing, a I

able boltwithin said casing, a projection spring for the said bolt, shiftable engaging hooks upon the said bolt, bolt-locking mem bers transversely shiftable adjacent the said a ,members, return springs for the said shifters, spaced projecting arms upon the said shifters, pivoted rockers having their inner ends operatively engaging the said arms, push buttons engaging said rockers and projecting exteriorlv of the said casing, a pivoted lever within said casing, an engaging dog for each locking member pivoted to the pivotal end of the said lever, a tapered plate carried by the free end of the'said lever, a normally resiliently projected key-hole spindle carried by the said casing, and a projecting lug upon said spindle having a path of movement in the same plane as the said plate when thesaid dogs are in their engaged positions.

17. A look eomprisinga casing, a shiftable bolt Within said casing, a projection spring ,for the said bolt, shiftable engaging hooks upon the said bolt, bolt locking members transversely shiftable adjacent the said bolt, projecting stop. flanges upon the said locking members norma-llv positioned in the path of movement of the said hooks and having notches arranged in alinement'with the said hooks when the locking members are in their releasing positions, return springs for'the said shifters, spaced projecting arms upon the said shifters, pivoted rockers having their inner ends pivotally engaging the said arms, push buttons engaging said rockersand projecting exteriorly of the said casing, a pivoted lever within saidrcasing, an engaging dog for each locking member pivoted to the pivotal end of thesaid lever, a tapered plate carried by the free end of the said lever, a normally resiliently projected-keyhole spindle carried by the said casing, and a projecting lug upon said spindle having a path of movement in the same plane as the said plate when the said dogs are in their engaged. positions. i i

18. A lock comprising a casing, a shiftaable bolt within said casing, a projection spring for the said bolt, shiftable engaging hooks upon :the' said bolt, bolt locking members transversely shiftable adjacent the said bolt, projecting stop flanges upon the said locking members normally positioned in the path of movement of the said hooks and having notches arranged inalinement with the said hooks when the locking members are in their releasing positions, a bracket Within said casing, a lever within the easa bracket within said casing,

ing and a plate carried by thelever, key

operable slide movablv positioned within the said bracket and adapted for engaging the said plate, a pin adjacent the said slide and a kev operated hookpivoted to said slide and adapted for engaging the said pin when the said locking members are'released.

19. A look comprising a casing, a shiftable bolt Within said casing, a projection spring for the said bolt, shiftable engaging hooks upon the saidboltybolt locking members transversely shi-ftable adjacent the said bolt, projecting stop flanges upon the said locking members normally positioned in the vpath of movement of the said hooks and having notches arranged in alinement: with the said-hooks when the locking members are in their releasing positions, separate return springs for each of the said locking members, independently successively operable engaging shifters for the said locking members, a bracket Within said casing. a lever within the casing and a plate carried by said lever, a key operable slide inovably positio'ned within the said bracket and adapted for engaging'the said plate, a pin adjacent the said slide and a key operated hook pivoted to said slide and adapted for engaging the said pin when the said locking members are released. i i

'20. A look comprising a casing, a shiftable bolt within said casing, a projection spring for the said bolt. shiftable engaging hooks upon the said bolt, bolt-locking mem- =ers-transvers'el shiftable ad acent the said bolt, projecting stop flanges upon the said locking-members normally positioned in the path of movement of the said hooks and having notches arranged in .alinement with the said books when the locking members areinctheir releasing positions, separate return springs for each of the said locking members, independently successively operable engaging shifters for the said locking members, return springs forthe said shifters, spaced projecting arms upon the said shifters, pivoted rockers engaging the said arms, push buttons engaging said rockers and projecting exteriorly of the said casing, a lever within the casing and a plate carried by said lever, a key operable slide inovably positioned within the said bracket and adapted for engaging the said-plate, a pin adjacent the said slide and a key operated hook pivoted to said slide and adapted for engagingthe said pin when the said locking members'are released.

2-1. A look comprising a casing, a shiftable bolt within said casing, a projection spring 11 0! the said bolt, shiftable engaging hooks upon the said bolt, bolt locking members transversely shiftable adjacent the said bolt, projecting stop flanges upon the said locking members normally positioned in the path sitions, a bracket within the casing, a key,

ofmovement of the said hooksand having notches arranged in alinement with the said hooks when the locking members are in their releasing positions, a pivoted lever Within said casing, an engaging dog for each locking member. pivoted to the pivotal end of the said lever, a tapered plate carried-by the. free end of the said lever, a normally resiliently projected key-hole spindle carried by the said casing, a projecting lug upon said spindle having a path of-movement in the same plane as the said plate when the said dogs are in their engaged pooperable slide movably positionedhvithinthe said bracket and adapted for engaging the said plate, a pin adjacent the said slide and akey operated. hook pivoted to said slide bolt, projecting stop flanges upon" the said locking members having notches normally positioned in alinement with the said hooks when the locking members areintheir releasing positions, separate return springs for each of the said locking members, independently successively operable engaging shifters for the said locking members, a pivoted lever within said casing, an engaging dog foreach locking member, pivoted to the pivotal end of the said lever, atapered plate carried by the free end of the said lever, a normally resiliently projected key-hole spindle carried by the said casing, a projecting lug upon said spindle having a path of movement in the same plane as the said plate when the said dogs are in their engaged positions, a bracket within the casing, a key operable slide movably positioned Within the said bracket and adapted 'for engaging the said plate, a pin adjacent the said slide and a key operated hook pivoted to said slide and adapted for engaging the said pin when said locking members are released.

23. lock comprising a casing, a shiftable bolt within said casing, a projection spring for the said bolt, shiitable engaging hooks upon the'said bolt. bolt locking members transversely shiftable adjacent the said bolt, projecting stop flanges upon the saidlocking members normally positioned in the path of movement of the said hooks and having notches arranged in alinement with the said hooks when the locking members are intheir releasing positions,"separate return springs 'for' each of the said'locki-ng members, inde pendently successively operable engaging shifters for the saidlocking members, re-

turn springs for the said'shifters, spaced pro ecting arms upon the said shifters, pivoted rockers engagingthesaid arms, push buttons engaging said rockers and projectingexteriorly'ot' the said casing, a pivoted lever Within said casing, an engaging dog for each locking member pivoted totlie pivotal end of the said lever, a tapered plate carried by the free end of the said lever, a normally resiliently. projected key-hole spindle carried by the said casing, a projecting lug upon said spindle having a path of movement in the sameplane as the said plate when the said dogs are in their engaged positions, a bracket withinthe casing, a key operable slidemovably positioned within the said bracket and adapted for engaging the said plate, a pin adjacent the said slideand akeywoperated hook pivoted tosaid slide andadapted for engaging the said pin when said-locking members are released. a i a 2-1.- A lock comprising a shiftable bolt, shiftable locking members for the said bolt, when projected, releasing shifters for each of the said locking members, push button actuators for each of the saidshifters, dog retainers for the said"lockiiig'members, and key operated controlling means for the said retainers. V j V;

25. -Av lock comprising ,a shiftable bolt, shiftable locking members for the said bolt, when projected, releasing shifters for each of the said locking members, push button ac tuators for each of the said shifters, dogretainers for the said locking members, key operated controlling means for the said retainers,and automatically operable retracting means forthe said retainers carried by the said bolt and whereby the said retainers are inactive when, the boltis retracted.

26. A lock comprising'a shiftableibolt', locki-ngmeinbers engageable with said bolt when in its projected position, means for shifting the'said locking members to their releasing positions, means for automatically rendering the saidreleasing means inactive when the bolt isreti'acted, and key operated f means for rendering the said releasing means inactive at Will.

In testimonywhereof I afiix my signature in presence of two Witnesses.

j v "LEO TURK Witnesses:

A. S. 'HELRIGLE,

SwARTs. 

